Minimum of 2 players, and all players must be male.
The players must take turns leaping over each other whilst completely naked, and avoid becoming sexually aroused.
The last man without an erection is declared the winner, also known as the "Last Man Not Standing".

Joe: *hop*

Hank: *hop*

Greg: Ow, my eye!

Hank: Sorry Greg!

Greg: No problem! *hop* Uh oh... Looks like Joe is the Last Man Not Standing!

Joe: Not for long!

Hank: Wow that was fun! Who's up for another round of Naked Boner Leap Frog?!